Knock-off for electrical warp stop motions



o. v. PAYNE KNOCK-OFF FOR ELECTRICAL WARP STOP MOTIONS Filed July 1, 1929 2 Sheets-Sheet 055w? \Z/DAY/VE MW 1 M Aug. 23, 1932. o. VIPAYNE KNOCK-OFF FOR ELEC TRICAL WARP STOP MOTIONS Filed July 1, 1929 2 Sheets-Sheet 1 M A T TURN/5Y5 Patented Aug. 23, 1932 UNITED; STATES "PATENT OFFICES oscae v. PAYNE; or woncnsrnn, MASSACHUSETTS, assrenoza 'TO' ononrron &

Kirov/"Les Loom: WORKS, or MASSACHUSETTS nocx-orrron ELECTRICAL wear 'ror mo'rrons Application fiieaam 1, 1929. Serial No. 375,118.

This invention relates to improvements in electrical stopping devices for loom, particularly warp stop motions and it is the general ob ect of the invention to provide a simplified and reliable form of electro -magnetic knock-oil mechanism.

In the usual form of electrical warp stop motion there is'a contact bar having two electrodes insulated from each other but adapted to be connected together electrically by a drop Wire at the'time of warp fault. Electromagnetic devices are then actuated to stop the machine to which the motion is applied. I

A warp fault is likely to occur at any pointin the cycle of the pick of the loom and it is desirable for this reason to provide means for storm g the indication from the warp stop motion and rendering it effective to stop'the loom at a predetermined point in the plck.

; It a further object of my present invention to accomplish this result preferably by means of a weighted lock.

It is a further object of my present inve'n tion to provide a suitable housing for certain.

of the movable parts of the mechanism, said housing being provided with a cover so formed as to simplify the type of bearing which may be used for the pivoted parts of the device. Y

It is another object of my present invention to provide a circuit having a visual signal, such for instance as anincandescent lamp, so arranged that upon warp fault the visual signalling device will be illuminated and will remain so until the warp fault is remedied, even though stopping of the loom acts to break the main circuit including the electromagnetic stopping devices.

lVith these and other, ob ects in view which will appear as the description proceeds, my

invention resides in the combination and arrangement of parts hereinafter described and set forth in the claims.

In the accompanying drawings wherein a convenient embodiment of my invention is set forth, I

Fig. 1 is a vertical section through a loom having my'invention applied thereto looking from the center of the loom toward the right end thereof,

' Fig. 4,

I iFig. 2' is a perspective view of the portion away and the parts being shown in normal position when the warp is intact,

Fig. 4 is a view similar to Fig. 3, but with the solenoid energized and the armature in elevated position,

woncns'rnn, MASSACHUSETTS,- A conrona'rron or" Fig. 5 is a vertical section on line 5 5 of v roll 12.v The warp W extends from the beam around the whip roll and forwardly toward the breast beam 13. Indicatedgenerallyat 14 is an electrical warp stop motion, the particular type of which forms no part of my present invention. The; stop motion may include drop wires 15 having slots 16 through which extend contact bars 17. These bars may includelan outer U-shaped member 18 which supports but is insulated from an inner electrode 19. The U-shaped bars are preferably grounded to the loom, while the bars .19 are connected by means of wire 20 to one side of a transformer T. The drop wires 15 are threaded on the warp threads W and when the latter are sufficiently taut for proper Weaving, the drop wires will be held in raised position as shown in Fig. 1 where they will be out of contact with the electrode 19. Should a warp fault occur, however, the drop wire corresponding to the faulty thread will fall and establish contact between the U-shaped bar 18 and the electrode 19. It is upon an occurrence of this condition that the loom must be stopped. 5 a

a horizontal section on line 6-6 of A shipper handle 21 of the forward pull type may be employed and has operatively looms.

connected thereto a rearwardly extending brake rod'22 attached to the upper end of a brake lever 23 pivoted as at 24 on the loom frame. This lever tends to move normally to ward the front of the loom under action of-a tension spring 25 and there is connected to said lever one .end of a flexible band 26 the oth'erend of whichis fixed to an anchor??- fast with respect to the looniframe. A shipper rod 28 is also operatively connected to the shipper handle and extends to mechanism not shown but effective to'connect and' disconnect the driving element, such as an electric motor, from the top shaft 29 on which is mounted'thebrake wheel 30. .The loom is provided with the usual bottom shaft 31 which preferably is given a complete revolution every. other pick of the loom.

The matter thus far described is of common construction, the shipper handle'and associated parts being well known and the electrical motion being of the type which has I gone into use in connection with certa1n classes. of

.My invention relates more particularly to the mechanism which is actuated upon the falling of a drop wire and operative to efi a detent57, see Fig. 4.

feet a shifting of the position of the shipper. handle 21, and in carrying my invention into eii'ect I provide a stand 40 bolted to the loomside and having a horizontal foot 41 on which rests a casing designated generally at C. The casing has a vertical wall 43 to which is secured a solenoid 44 having a movable core 45. The core is provided with ahead 46 which is forked as at 47 in Fig; 6 to receive a transmitting link 48.

ported by the forked head 46.- As shown in Fig. 3 the right hand end of thetransmitting link receives a pin 51 secured to a knock-0E lever 52, the latterbein'g connected by means of a rod 53 to the shipper handle 21 as shown inFig. 1. The knock-off lever is'pivoted as at 54 .to a stud secured in an extension 55 projecting from the casing C. The transmitting link is provided with an abutting end56 and The bottom shaft 31 cam 60 having a point 61 which cooperates with a lever 62 actingto move said lever from its low to its high position in a right direction as viewed in Fig. 1, every other pick of the loom. The casinghas a stud 63 which'extends through a hug 64 of lever '62 to'afford pivotal support for said lever. The cam lever is provided with a shoulder 65 adapted to enga e the abutting end 56 of the transmitting link48.

" During normal loom operation the lever 62 is rocked about the stud 63 to cause the abutment 65 to approach the link. If the latter be down as shown in full lines in Fig.

3 no-movement of the link results and the p The latter is provided with a slot 49 as shown in Fig. 7' through which extends apin 50 which is sup.-.

has secured thereto a abutment will pass over the end of the link as shown in dotted lines same figure.

The solenoid is likely to be energized at any instant regardless of the position of the lever 62.;and shoulder 65 relatively to the ,link' 48 and'for this reason it is necessary to provide means to hold the link raised until it canbe engaged by the lever 62. Accordingly,

I provide a 'support 70 having a counter weighted end 71. and anv upstanding lever The support moves H engaging finger 72. pivotally about a pin 1 67 set loosely. in a drilled hole in a portion of-the casing G. The

finger 7 2 is adapted for the engagement with the detent 57' but tends normally to move in 9 a clockwise direction as viewed in Fig. 0

under action of the counterweight 71. The right end of link 48 as viewed inFig. 7 has a vertical slot 66'through which the pin 51 7 extends, the link normally-being partly supported by the pin and the slot exten'dingbelow said pin. There is located theicasing a plate 75 which is equipped with means for establishing electrical connection between wires-76 and 77 and the solenoid. By this arrangement the two wires 76 and 77 are led into the box and may be connected to .the wire with which the solenoid is wound.

As shown in Fig. 2 the outer end of the stud 63 is threaded as at 7 8 and isadapted to. extend through a hub 7 9formed on a cover 80 for the box and receive a nut which holds the cover in place. The cover has a wing 81 which extends under the top82 of the casing? and rearwardly to the wall 43, the wing and box being so formed that when the cover is removed .thev electrical connections between endwise movement in the other direction beingprevented by the head onthe pin. In like manner the hub 7 9 engages the hub 64 of the cam lever to prevent the latter from moving forwardly along the stud 63. In the same way I provide the wall 97 with an extension 98 which is in alignment with the stud 54 on which the knock-off lever 52 is pivotally mounted. said extension 98 preventing the knock-oiflever from moving endwise from its pivotal support 54. t

In operation the parts will normally be in the position shown in Fig. 3 and will remain in this position so long as the warp is under proper tension or is intact. When a fault 0o? ours in thewarp, however, and one of the drop wires 15 falls the bars 18 and 1 9 will be electhe wires 76 and 77 and the solenoid may be a trically connected whereupon current will flow in the following circuit, referring to Fig. 8: transformer T, wire 20, electrode 1 9, the fallen drop wire, U-shaped bar 18, to wire 85 which is grounded to the loomfra neas at G; Current will rise from the frame through wire8i3 which is grounded to theiloom prefer ably through the shipper rod 28, pass through a switch 87 insulated from the loom shown in 10 and 8, pass over wire 88 which iscono to wire 76, through thesoleno'id ld, t, ongh thewire 77 back to the other side of the transformer; Current fiowing in this circhit vvill'ene'rgize the solenoid, causing the latter-to raise the transmitting link 4-8 so that the control part thereof is raised, assumingthe 'iosit on shown in i l The action of link 48 depends upon the position of lever 62. If the latter is down the link will move around pin 51 as a pivot, moving the end 56 oppositeshoulder65. On the other hand, if lever 62 is up with end '56 under the shoulder 65 the latter will become the pivot for the link and said link will assume the position shown in dotted lines in Fig. 3. This latter action is possible because of slot 66.

Irrespective of which end of link 48 is raised, the lock will swing in a clockwise direction around pivotpin 67 until. finger-72 moves to the link supporting position shown in Fig. 4:. The lock will thereafter hold the link in knock-off position independently of the solenoid. If the right end of the link be raised it will fall during the down motion of lever 62. When the link is in the dotted line position shown in Fig. 3 it may be'considered' as having assumed an intermediate or indicating position from which it will move to the position shown in Fig. 4: as'the loom'con= tinues to run.

The next working stroke of shoulder 65 will move the link to the right, :which movement will rock the knock-off lever 52 from the full to the dotted line position-shown in Fig. l, thereby causing endwise' movement to the right as viewedin Fig. 1 of the rod 53 to cause shifting of the shipperlever 21to the stopping, position.

As link 48 reaches its extreme right hand position the finger will enter detent 57 so that during the return movement ofthelink to the left the lock will be given a reverse movement around stud 67 and the transmitter will therefore be free to fall back to its position shown in Fig. 3 in full lines. 7

By reference to Fig.1 it will be noted that when the shipper handle moves to stopping position or to the left the shipper rod 28 will move to the right, thereby opening the switch 87 to interrupt the circuit previously traced. The solenoid will therefore become deenergiZed and the previously described falling of the transmitter can take place:

At thesame time current is flowing through the previously described circuit current will also rise from the frame and pass over wire 90, through a visual signal; such as a'small incandescent lamp" 91, along wire 92 to the wire 77, transformer T, wire 20, drop wire and contact bar, wire= to the ground. Gun rent will flowin this-circuit so long as" the drop jrwire establishes contact betwejenkthe electrodes 18 and 19 irr-espe'ctive of the position of the switchsS'Z, and this signal will remain in a closed circuit and therefore will continue to give visual indication of" warp fault so long as a drop wire is down.

From the foregoing it will 'be seen that]; haveprovidedwa-knocking-off device to be interposed between a'bank'of drop wires and 'the ship-per handle of the loom, said device 7 operating at any desired time in the pick of thelooinand being provided with a support whlc h holds the'transmitter link in engaging position with respect to the cam lever; In

this way an indication which is given at any point in the cycle of the loom can beheld over until the desired timekforstopping the loom has'arrived. It willfurther bes'een that the transmitter disconnects itselffrom the support during the knocking-off stroke. It will further-be seen that'the cover for the box is provided-with a series of devices which hold the several parts of the device in proper position. It will be noted that all of the pivots are parallel and aresubstantiallyperpendicular to the front wall 97 of the cover.

so that when the latter is removed the mov- 1 able parts within the box can be taken out very readily, this feature also facilitating" assembly of the device." It will further be seen that the studj63' is the means by which the cover 80 maybe held :in position.

Having thus described my invention it'will to stop the loom, a link operatively related the actuator, the latter when at the end of its knocking-elf stroke overlying a portion of the link, and alock normallyheld in nonlocking position by the weight of'the link but movable when the link is attracted by the electro-magnetic device to lock said link in the path of the actuaton "'2. In a loom: stopping mechanism a reg.- ularly moving actuator, a member to be moved by a force derived from the actuator to stop the loom, an electro-magnetic element normally de-energized but energized at the time loom stoppage is desirable, a" device .to the lever and normally out of-tlie path of formedof magneticmaterial to be attracted to the ele ctro-magnetic element, a link pivoted at one side of the center thereof to the electromagnetic element and having one end capable of engaging the actuator and the other end having an operative connection with the member, said other end capable of movement relatively to the member in a direction transverse of the movement of'the actuator but in all positions maintaining operative connection with the member, the link capable of movementby the device irrespective of the of magnetic material to be attracted tothe electro-magnetic element, a link pivoted at one. side of the center thereofto the electromagnetic element and having one end capable of engaging the'actuator and the other end having anoperative connection with the member, said other end capable of movement relatively to the member in a direction transverse of the movement of the actuator but in all positions maintaining operative connection with the member, the link capable of movement by the device irrespective of the 7 position of theactuator, and means acting upon movement of the link under influence of the device to hold the link in operative position relatively to the actuator independently of the electro-magnetic element.

4. In loom stopping mechanism, an actuator having working and non-working.

strokes in a given path'of movement, a member normally at rest to be given a'movement to stop the loom, an electro-magnetic element to be energized at the time loom stoppage is desired, and a link to transmit force from the actuator to the member,the link being free to move relatively to the member in a direction transverse to the path of movement of the actuator but having operative engagement with the member when moving in the direction of the working stroke of the actuator, the electro-magnetic element being effective to move the link into the path of movement of the actuator.

5.. In loom stoppingmechanism, an actuator having working and non-working strokes in a given path ofmovement, a member normally at rest to be given a movement to stop the loom, an 'electro-magnetic element to be energized at the time loom stoppage is desired,and a link under control of the electro-magneticelement to be moved by the latter from normal inoperative position into the path of movement of the actuator to transmit a force from the actuator to the member to move the latter, the link being pivotally connected with respectto the electro-magnetic element and capable of movement relatively to the member in a direction transverse to the motion of the actuator when the latter is at the end of its working stroke at the time the electro-magnetic element moves the link.

6. In loom stopping mechanism, an actuator having working and non-working strokes in a given path of movement, a member normally at rest to be given a movement to stop the loom, anelectro-magnetic element to be energized at the time: loom stoppage is desired, and a device pivotallyconnected with respect to the element, one end of the device beingheavier' than the other, the lighter end being normally out of the path of the actuator and the other end being movable independently of the member, the element ef-- fective to move the device independently of the position of the actuator, the heavier end to be lifted if the actuator is in position to prevent the lighter end from being moved into operativeposition relatively tothe actue ator, the heavier end when the actuator is on its non-workingstroke acting to move the lighter end into the path of the actuator.

7 Inloom stopping mechanism, an actuator having working and non-working strokes in a given path of movement, a member normally atrest-to be given a movement to stop the loom, an electro-magnetic element to be energized at the time loom stoppage is desired, and means capableof transmitting a force from the actuator to the member to move the latter, said means including a part normally out of the path of the actuator and position, the actuator on the working stroke next following the movement ofvthe; means move the means and thereby move the member to stopping position. i

8. In loom stopping mechanism, an actuator having a regular working stroke and a non-working stroke, an electro-magnetic ele- 'ment to be energized when the loom is to be stopped, a member to be moved by a force derived from the actuator on the working stroke thereof and efiective when so moved to stop the loom, a transmitter to move to. a position where itcan transfer the aforesaid force from the actuator to the member by engagement with the actuator on the working its by the'element engaging the first part to, v

stroke thereof, two pivots efiective normally l to support the transmitter, one of said pivots constituting a connection with the element and movable with the element, the other pivot being stationary under normal conditions, the transmit-ter moving around the said other pivot and into the path of the actuator when the element is energized and the actuator is out of the path of movement of the transmitter, and the transmitter engaging the actuator when the latter is near. the end of its working stroke and moving pivotally around the engaged part of the actuator when the element is energized at the time the actuator is in the stated position, and means to move the transmitter into the path of movement of the actuator as the latter moves on its non-working stroke.

9. In an electrically controlled loom stopping mechanism, an actuator having regular working and non-working strokes, an electromagnetic element to be energized when the loom is to be stopped, a loom controlling member to be moved by the actuator to stop the loom, a transmitter operatively connected to the element and tending to move into the path of the actuator when acted upon by said element, said transmitter having a connection with the element at a point intermediate of its ends and the ends being each tree to move, a lock to hold the transmitter in the position into which it is moved by the element, said lock acting independently of the position of the actuator and at any time that the element moves the transmitter, one end of the transmitter normally moving into the path of the actuator to be engaged by the latter to cause movement of the transmitter against the member to move the latter, said end when the actuator is in position to prevent normal movement thereof engaging said actuator to cause the other end to move relatively to the member, the transmitter under this latter condition moving around the connection with the element as a pivot when the actuator moves on its non-working stroke to bring the first named end into the path of the actuator.

10. In an electrical warp stop motion, a contact to be closed by a fallen drop wire, and a pair of devices one to give a continuing signal and the other to effect loom stoppage, parallel circuits one for the signal and the other for the loom stopping device, both of said circuits being in series with the contact, the circuit including the signal remaining closed during the time that the drop wire is fallen, and the circuit including the loom stopping device being broken as soon as the loom is stopped.

11. In a loom stopping mechanism, an actuator moving regularly in a given path and having working and non-working strokes, a knock-off member movable to stop the loom, an electro-magnetic element to be energized at warp fault, a transmitter normally in inoperative position and out of the said path, the transmitter being under control of the element and movable by the latter toward operative position at any time irrespective .of the positionoif the actuator, the latter when near the end of its working stroke prevent ing the transmitter from movinginto said path so that the transmitter assumes anintermediate position, and means independent of the ,electro-magnetic element to hold the transmitter in intermediate position, the transmitter acting on the non-working stroke of the actuator to move into said path and, in position to transmit a stopping force to the knock-oit member from the actuator on the following working stroke of the latter.

12. In a loom stopping mechanism, an actuator moving regularly in a given path and having working and non-working strokes, a knock-off member movable to stop the loom,

an electro-magnetic element to be energized of the electro-magnetic element to hold the transmitter in intermediate position, the

transmitter acting on the non-Working stroke oi the actuator to move into said path and in position to transmit a stopping force to the knock-oil member from the actuator on the following working stroke of the latter, said means acting as a pivot around which the transmitter moves on the non-working stroke of the actuator. i

13. In a loom stopping mechanism, an actuator moving regularly in a given path and having working and non-working strokes, a knock-oil member movable to stop the loom, a transmitter to be interposedbetween the knock-oft member and actuator on a working stroke of the latter, said transmitter normally in inoperative position out of the said path,

electro-magnetic means eliective upon occur rence of warp fault and at any time with respect to the position of the actuator to move the transmitter, the latter moving to operative position if the actuator be on a non-work- 7% .ing stroke and beingmoved to indicating position by the actuator if the latter is near the/end of its working stroke, and a device independent of the electro-magnetic means having a complete movement Whenever the electro-magnetic means moves the transmitter to retain the transmitter in either operative or indicatmg positlon immediately upon movement of the latter by the electro-magnetic means, the transmitter moving to oper- 14:. In a loom stopping mechanism, a regularly moving actuator, a memberto be moved by a force derived from the actuator to stop the loom, an electro-magnetic element normally de-energized but energized at the time loom stoppage is desirable, a device formed of magnetic material to be attracted to the electro-magnetic element, and means controlled by the device and operatively connected to and movable relatively to the member and nor- 7 mallyout of operative relation with respect to the actuator, said means maintaining operative relation with the member when moving relatively to the latter and having a complete movement at any time by the device irrespective of the position of the actuator, the next working stroke of the actuator being effective to move the'means and member to stop the loom.

15. In a loom stopping mechanism, a reg- I ularly moving actuator, a member to be moved by a force derived from the actuator to stop the loom, an electro-magnetic element normally de-energized but energized at the time loom stopping is desirable, a device formed'of magnetic material to be attracted to the electromagnetic element, means controlled by the device and operatively connected to and movable relatively to the member and normally out of operative relation with respect to the actuator, said means maintaining operative relation with the member when moving rela-- tively thereto and movable at any time by the device irrespective of the position of the actuator, the neXt working stroke of the actuator being effective to move the means and member to stop the loom, and additional means to hold the first named means in the path of the actuator when the device has been attracted by the element regardless of the position of the actuator.

16. In a loom stopping mechanism, a regularly moving actuator, a knock-oil member, a device normally in inoperative position to become operatively connected to the actuator and member at warp fault, means including an electro-magnet to move the device toward operative position in any position of the actuator,'and a retaining mechanism having a complete movement whenever the electromagnet moves the device to retain the latter in operative position independent of the electro-magnet, said mechanism capable of holding the device in operative position in all positions of the actuator.

In testimony whereof I have hereunto affixed my signature.

' OSCAR V. PAYNE. 

